1. most resembling milk in color, consistency, or appearance; whitest and most opaque
Usage: superlative form of milky
2. containing the most milk or having the strongest milk flavor
Usage: superlative form of milky

Examples

• She chose the milkiest white paint for the nursery walls.
• The milkiest coffee was too rich for his taste.
• Among all the gemstones, this opal had the milkiest appearance.
• The milkiest part of the river was where the glacier runoff mixed in.
• This is the milkiest chocolate I’ve ever tasted.
• The milkiest clouds gathered before the storm.